iphone之UISegmentedControl

代码：
//选择按钮
  NSArray*buttonNames = [NSArray arrayWithObjects:@"今天", @"本周", @"本月",nil];
 UISegmentedControl* segmentedControl = [[UISegmentedControl alloc]initWithItems:buttonNames];
 [segmentedControl setFrame:CGRectMake(60, 10, 200, 40)];
 segmentedControl.selectedSegmentIndex=1;
//添加事件
 [segmentedControl addTarget:self action:@selector(segmentAction:)forControlEvents:UIControlEventValueChanged];
  [self.viewaddSubview:segmentedControl];
 [segmentedControl release];
//事件
-(void)segmentAction:(UISegmentedControl *)Seg{
     NSIntegerIndex = Seg.selectedSegmentIndex;
 NSLog(@"Seg.selectedSegmentIndex:%d",Index);
}